CVE-2025-32444: vllm-project vllm Deserialization of Untrusted Data
Vulnerability summary
CVE-2025-32444 is a critical (CVSS 10.0) Deserialization of Untrusted Data vulnerability in vllm-project vllm. EPSS estimates a 1.79% chance of exploitation in the next 30 days, higher than 78% of scored vulnerabilities. 1 public exploit is recorded.
Advisory lineage
Upstream 0 · Downstream 0 · Related 3Timeline
- 30-04-2025PublishedVulnerability first disclosed.
- 30-04-2025Last modifiedVulnerability information updated.
Description
vLLM is a high-throughput and memory-efficient inference and serving engine for LLMs. Versions starting from 0.6.5 and prior to 0.8.5, having vLLM integration with mooncake, are vulnerable to remote code execution due to using pickle based serialization over unsecured ZeroMQ sockets. The vulnerable sockets were set to listen on all network interfaces, increasing the likelihood that an attacker is able to reach the vulnerable ZeroMQ sockets to carry out an attack. vLLM instances that do not make use of the mooncake integration are not vulnerable. This issue has been patched in version 0.8.5.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · PypiEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HDiffers
- NVDNIST9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HDiffers
EPSS trend
Probability
1.79%
Chance of exploitation in the next 30 days
Percentile
78%
Versus all other CVEs
30-day change
+0.12 pp
From 1.67% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundVllm
Maturity: poc
Weaknesses
CWE · root causeAffected systems
PyPI1 product
- vllm< a5450f11c95847cf51a17207af9a3ca5ab569b2c | ≥ 0.6.5, < 0.8.5
Vllm1 product
- vllm≥ 0.6.5, < 0.8.5
Vllm-project1 product
- vllm≥ 0.6.5, < 0.8.5
3 vendors · 3 products
References
8 links- github.com/vllm-project/vllm/security/advisories/GHSA-hj4w-hm2g-p6w5X Refsource CONFIRMWEBAdvisoryEVIDENCEExploitVendor Advisory
- github.com/vllm-project/vllm/security/advisories/GHSA-x3m8-f7g5-qhm7X Refsource MISCWEBAdvisoryNot Applicable
- github.com/vllm-project/vllm/commit/a5450f11c95847cf51a17207af9a3ca5ab569b2cX Refsource MISCWEBFIXPatch
- github.com/vllm-project/vllmPACKAGE